diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index f69d5296137..82f2fdab2fc 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -1290,7 +1290,7 @@ void brw_SAMPLE(struct brw_compile *p, GLuint simd_mode) { GLboolean need_stall = 0; - + if (writemask == 0) { /*printf("%s: zero writemask??\n", __FUNCTION__); */ return; @@ -1327,8 +1327,14 @@ void brw_SAMPLE(struct brw_compile *p, /* printf("need stall %x %x\n", newmask , writemask); */ } else { + GLboolean dispatch_16 = GL_FALSE; + struct brw_reg m1 = brw_message_reg(msg_reg_nr); - + + guess_execution_size(p->current, dest); + if (p->current->header.execution_size == BRW_EXECUTE_16) + dispatch_16 = GL_TRUE; + newmask = ~newmask & WRITEMASK_XYZW; brw_push_insn_state(p); @@ -1343,7 +1349,13 @@ void brw_SAMPLE(struct brw_compile *p, src0 = retype(brw_null_reg(), BRW_REGISTER_TYPE_UW); dest = offset(dest, dst_offset); - response_length = len * 2; + + /* For 16-wide dispatch, masked channels are skipped in the + * response. For 8-wide, masked channels still take up slots, + * and are just not written to. + */ + if (dispatch_16) + response_length = len * 2; } } |